Effects of Cr doping on the cationic ordering and magnetic properties of Sr2(Fe1−xCrx)MoO6
Effects of Cr doping on the cationic ordering and magnetic properties of Sr2(Fe1−xCrx)MoO6
复制标题
Cr掺杂对Sr2(Fe1−xCrx)MoO6阳离子有序性和磁性能的影响
DOI：
10.1016/j.physb.2003.08.115
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发表时间：
2004
影响因子：
2.8
通讯作者：
Junjun Liang
中科院分区：
文献类型：
--
作者：
X. M. Feng;G. Rao;Guotian Liu;H. Yang;Wenjie Liu;Z. Ouyang;Junjun Liang
The crystal structure and magnetic properties of Sr{sub 2}(Fe{sub 1-x}Cr{sub x})MoO{sub 6} (0{<=}x{<=}0.4) have been investigated. In contrast to Sr{sub 2}(Fe{sub 1-x}Mn{sub x})MoO{sub 6} and Sr{sub 2}Fe(Mo{sub 1-x}W{sub x})O{sub 6}, the Cr doping results in a decrease of cationic ordering in Sr{sub 2}(Fe{sub 1-x}Cr{sub x})MoO{sub 6}. The saturation magnetization decreases with x and exhibits a linear dependence on the anti-site defect concentration. All the samples exhibit a semiconductor-metal transition. The low-field magnetoresistance increases with the saturation magnetization in a non-linear way. By assuming a preferential occupation of the Cr ions at the Mo sites, the dependence of magnetization on the Cr content can be well explained within a simple ferrimagnetic model.
The crystal structure and magnetic properties of Sr{sub 2}(Fe{sub 1-x}Cr{sub x})MoO{sub 6} (0{<=}x{<=}0.4) have been investigated. In contrast to Sr{sub 2}(Fe{sub 1-x}Mn{sub x})MoO{sub 6} and Sr{sub 2}Fe(Mo{sub 1-x}W{sub x})O{sub 6}, the Cr doping results in a decrease of cationic ordering in Sr{sub 2}(Fe{sub 1-x}Cr{sub x})MoO{sub 6}. The saturation magnetization decreases with x and exhibits a linear dependence on the anti-site defect concentration. All the samples exhibit a semiconductor-metal transition. The low-field magnetoresistance increases with the saturation magnetization in a non-linear way. By assuming a preferential occupation of the Cr ions at the Mo sites, the dependence of magnetization on the Cr content can be well explained within a simple ferrimagnetic model.